lichen = {
  email : function(field, message) {
    Tapestry.addValidator(field, true, function(value, event) {
      if (/\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/.test(value) == false){
        event.recordError(message);
      			}
    });
  }
};